### uv coordinates???

by **feefolle** » Thu, 15 Jun 2006 19:35:14 GMT

Hi ^_^
I'm working on the creation of normal maps with two mesh at different
levels of detail.
I've found several programms to calculate normal maps, the problem is
that all these programs needs uv maps for the low model.
I've my meshes obtained with laser scanner and two obj files of the two
levels of details with only the points and triangles.
So how can I obtain the uv coordinates for my model?
I use Rhino and Blender but I'm not able to find the solution for my
problem.
Thank you so much
Serena

### Re: uv coordinates???

by **Wolfgang Draxinger** » Thu, 15 Jun 2006 20:42:46 GMT

For parametric patches (NURBS, Bezier) the UV Coordinates uare
usually the evaluator variables (in Blender those are actually
named U and V).
For polygonal meshes there is no general approach to get UV
coordinates. But there are a few algorithms, and Blender
contains one of the best currently avaliable: LSCM.
You reach it by: Faceselect Mode [F-Key], select all Faces
[A-Key], Unwrap-Menu [U-Key], LSCM. To work properly on closed
manifolds LSCM needs you to supply seams in the model where it
can safely cut the mesh.
Wolfgang Draxinger
--

### Re: uv coordinates???

by **feefolle** » Thu, 15 Jun 2006 22:13:42 GMT

> For parametric patches (NURBS, Bezier) the UV Coordinates uare
I will try this evening, thank you so much!
Serena

### Re: uv coordinates???

by **Mihail** » Sat, 17 Jun 2006 00:49:43 GMT

>>coordinates. But there are a few algorithms, and Blender
there is a video tutorial (LSCM unwrapping
with Blender) available. May be usefull,
it is not so simple stuff ..
http://www.**--****.com/
Mihail

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Hi ^_^
I'm working on the creation of normal maps with two mesh at different
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I've my meshes obtained with laser scanner and two obj files of the two
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I use Rhino and Blender but I'm not able to find the solution for my
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Thank you so much
Serena

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